Is it possible to assign the reticle key in Control or deathmatch?

In Apex we can assign several keys on PC and there are functions that are linked to various functions that are not specified in the 'Controls' section;

An example will be that if we change the toggle crouch button from 'LCTRL' to 'LALT', this configuration will also automatically be applied to the 'Jump Master' toggle button, since it does not have a specific section in 'Controls' to assign to it. to a key if not bound to toggle crouch.

But this does NOT apply to control or Deathmatch (or arenas) as far as scopes are concerned. In these modes, to change the ping system is done with the middle mouse button (which by default is the button to pin), but I have had to change it to the 'E' key since my mouse does not have 'middle mouse button'. I imagine that it should also be linked as in the 'Jump Master' example I mentioned, but it doesn't apply here (Middle mouse button is not assigned to anything in case you ask).

Does anyone know a solution so that in modes like Control, Deathmatch (or even Arena)

I can change the button to change sights?

Thank You.